Clean up and modernize librandom.

 Correct random number generation has historically been
suprisingly painful to achieve. There was no standard,
every system behaved in a subtly different way, and there
were a few userland initiatives to get decent randomness,
all incompatible of course.
 The situation is a bit better now, we're heading towards
some standardization. The arc4random() series of functions
is a good API, and available on a lot of systems -
unfortunately not Linux, but on Linux the new getrandom()
makes using /dev/random obsolete.

 So I removed the old crap in librandom, dropped EGD support,
dropped dynamic backend selection, made a single API series
(random_* instead of goodrandom_* and badrandom_*), added
an arc4random backend and a getrandom backend, and defaulted
to /dev/urandom backed up by SURF in the worst case. This
should be much smaller and logical. However, it's a major
API break, so the skarnet.org stack will be changed to
adapt.

1 files changed, 0 insertions, 21 deletions

diff --git a/src/librandom/rrandom_read.c b/src/librandom/rrandom_read.c
deleted file mode 100644
index 9d56b0c..0000000
--- a/src/librandom/rrandom_read.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/* ISC license. */
-
-#include <errno.h>
-#include <skalibs/allreadwrite.h>
-#include <skalibs/error.h>
-#include <skalibs/unirandom.h>
-#include <skalibs/rrandom.h>
-
-unsigned int rrandom_read (rrandom *z, char *s, unsigned int n, unsigned int (*f) (unirandom *, char *, unsigned int))
-{
-  unsigned int i = 0 ;
-  for (; i < 3 ; i++)
-  {
-    int r ;
-    if (!z->tries[i].ok) continue ;
-    r = sanitize_read((*f)(&z->tries[i].it, s, n)) ;
-    if (r > 0) return r ;
-    z->tries[i].ok = error_temp(errno) ? z->tries[i].ok - 1 : 0 ;
-  }
-  return (errno = ENOENT, 0) ;
-}